Continuous viscosity meter



June-14,1938. HHDECKER 2,120,351

CONTINUOUS VISCOSITY METE R Filed 061:. 7', 1937 a2 I66 Z5 ME 3515 Ji iE 1 [x I! 12 36 22 ,za {5 I29, INVENTOR:

' (Va/ward 195 0606.

' TTORNEY Patented June 14, 1938 UNITED STATES PATENT OFFICE ApplicationOctober 7,

4 Claims.

This invention relates to means for continuously measuring viscosity ofliquids and it consists in the constructions, arrangements andcombinations herein described and claimed.

It is the cardinal purpose of the invention to provide means formeasuring viscosity of a liquid in which an automatic temperaturecompensator is involved, insuring correction of variations intemperature, thereby measuring viscosity of a standard or uniformtemperature.

It is also an object of the invention to provide a viscosity meter ofsimple construction and in which the device may be employed to indicateor record the viscosity of aliquid-undergoing a test.

Additional objects, advantages and features of invention will beapparent from the following description considered in conjunctionwiththe accompanying drawing, wherein- Figure l is a vertical sectionalview of my invention.

Figure 2 is a cross section on a reduced scale,

on the line 2-2 of Figure 1.

Figure 3 is a similar view on the line 33 of Fig. 1.

Figure 4 is a further cross section on the line 4-4 of Figure l.

Figure 5 is a fragmentary end elevation of the device showing the use ofthe invention embodying the indicating means.

There is illustrated a casing I0 divided into compartments ll, l2, andI3 by transverse partitions 14 and 15, the former extending the fullwidth of the casing, and the latter adjoining a vertical partition l6defining a well ll.

The compartment H houses a prime mover, such as an electric motor II, orotherwise. The prime mover includes a driven shaft is having a gear 20in mesh with a gear 2| fixed upon an inlet pipe 22, the gear 2| being inmesh with a gear 23 fixed to a shaft 24 revolubly journalled in the wallM. The inlet pipe 22 includesa pipe 25 extended exteriorly of the casingto a source of fluid to be measured.

The inlet pipe 22 has fixed thereto for rotation therewith a cup 26, thepipe 22 extending upwardly therein to the level of the upper edge of thecup, and extended downwardly into the cup there is an inverted cup 21carried by a shaft 23 revolubly journalled in the partition 15. Theshaft 28 has a bevelled gear 29 in mesh with a gear 30 carried by ashaft 3| extending across the well ll, the extremity of the shaftterminating exteriorly of the casing and having an indicator 32 fixedthereto. *Obviously the indicator 1937, Serial lNlo. 1 7st": (Cl.265-11) may be coordinated with a scale 33 (see Fig. 5) or the shaft 3|may actuate a scriber for obtaining a record upon a chart, if desired.The motion imparted to the shaft of the indicator is preferably balancedthrough a pendulum 34 fixed to the shaft 31. v

The shaft 24 has fixed thereto a cup 35 of the same diameter as the cup26, but ofslightly greater depth, for a purpose as will presentlyappear. An upstanding pipe 36 is mounted upon the base of the cup 35 oflesser height than the walls of the cup.

An inverted cup 31 is disposed in the cup 35 surrounding the pipe 36,the cup being revolubly journalled in the partition l6 of the casing byvirtue of a shaft 33.

The shafts 28 and 38, are interconnected through a link 39 fixed to theshaft 28 and having a pivot 40 receiving a link 4|, pivotally connectedas at 42 to a link 43 fixed to the shaft 38.

An outlet 44 is provided in communication with the compartment l2,positioned at a level approximately at the height of the upper edge ofthe cup 26, for a reason as will appear from the description of theinvention.

Inasmuch as the connection between the pipe 22 and the inlet 25 must beof a revoluble type, this may be accomplished through a packing 45,vwhich may be of a flexible character.

In use, the cup 35 is filled with a liquid of known viscosity up to apoint corresponding to the height of the upper edge of the cup 26. Thefluid to be measured as to viscosity is now admitted through the inlet25, discharging over the upper end of the pipe 22 into the cup 26 andover the edge thereof. This fluid is. admitted until the chamber I2 isfilled up to'a level with the lower periphery of the outlet 44.

The prime mover II is now started, imparting rotation of the cup 26 byvirtue of gears 20-2l and also imparting rotation of the cup 36 throughintermeshing of gear 23 with the gear 2|. However, rotation of the cup36 is in the opposite direction to the cup 26. It will be obvious thatthe liquid in cup 36 will assume the same temperature as the liquidentering the cup 26 since it is immersed therein, and thus a liquid ofknown viscosity will, be compared with a liquid of unknown viscosity.

As cups 26 and 36 revolve it will cause the liquids in them to turn inthe same direction as the respective cups. The friction ofthe revolvingliquids will cause inverted cups 21 and 31 to turn in the direction oftheir respective cups 26' and 35, andsince the inverted cups 2! and 31-are connected through links 39, 4| and 43 are connected so that theirturning forces oppose each other, this difference in force will beimparted to the shaft 3| through the gears 29-30 to the shaft 3| andfinally to the indicatoror scriber 32 which maybe indicated or scribedas desired, balanced through the pendulum 34.

While I have shown and described a preferred construction this is by wayof illustration only, and I consider as my own all such modification instructure as fairly fall within the scope of the appended claims.

I claim:- v

1. A continuous viscosity meter comprising a casing, a pair of revolublecups therein, revoluble members within the cups, each member having ashaft, link membersconnecting the shafts, an indicator shaft operablyconnected with the shaft of one of the members, means for rotating thecups in opposite directions, one of the cups having a fluid of knownviscosity, and means for supplying fluid to be tested to the other cup.

casing having a pair of transverse partitions defining superposedcompartments, the intermediate compartment having an outlet intermediateits height, a pair of cup members within the compartment, one of thecups having a pipe depending medially therefrom and revolubly journalledin the lower partition, the pipe extending upwardly in the cup to thelevel of the upper edge thereof, a gear fixed to a lower portion of thepipe outwardly of the partition, a shaft depending medially from theother cup and journalled in the lower partition, said shaft having agear fixed thereto and in mesh with the first named gear, the secondnamed cup having an upstanding tube of a diameter corresponding to thepipe of the first named cup, and said cup further having a heightgreater than the first named cup, an inverted cup within each firstnamed cups, said inverted cups having respective shafts journalled inthe upper partition, the inverted cup associated with the first namedcup having a bevel gear fixed thereto, an. indicator or recorder shaft,said shaft having a gear in mesh with the bevel gear, each of the shaftsof the inverted cups having a laterally extended link, a leverconnecting the links, a liquid inlet connected with the pipe of thefirst named cup,

permitting passage of liquid into the cup and into the intermediatecompartment to a level with the outlet thereof, a liquid of knownviscosity in the second named cup, and a prime mover associated with thefirst named gears whereby to impart opposite rotation of said cups.

4. The structure of claim 3, in which the indicator shaft includes apendulum.

HOWARD H. DECKER.

